The poll suggests that some voters may be giving Obama a second look as he has repositioned himself with a series of high-profile bipartisan legislative agreements and a new rhetorical emphasis on international competitiveness. Thirty percent of those polled in the most recent survey said that in the past several months the president had “changed his approach in office” for the better, and only 13 percent said he had changed it for the worse. Half of those polled said they saw no change.